染指垂涎

rǎnzhǐchuíxián
lit. dirty finger, mouth watering (idiom); fig. greedy to seize sth

CEDICT

比喻急欲攫獲非分利益。

重編國語辭典

Entry Composition

1 染指 rǎnzhǐ
  1. to dip a finger (idiom); fig. to get one's finger in the pie
  2. to get a share of the action
  3. abbr. for 染指於鼎
2 垂涎 chuíxián
  1. to drool; to salivate
  2. (fig.) to covet; to desire greedily